debug ip dhcp server

debug ip dhcp server

To enable Cisco IOS Dynamic Host Configuration Protocol (DHCP) Server debugging, use the debug ip dhcp server privileged EXEC command. Use the no form of this command to disable DHCP server debugging.

debug ip dhcp server {events packets linkage} no debug ip dhcp server {events packets linkage}

Syntax Description

events

Reports server events, like address assignments and database updates.

packets

Decodes DHCP receptions and transmissions.

linkage

Displays database linkage information (such as parent-child

 

relationships in a radix tree).

Defaults

DHCP server debugging is not enabled.

Usage Guidelines

This command first appeared in Cisco IOS Release 12.0(1)T.

Examples

The first example below shows a combination of DHCP server events and decoded receptions and transmissions. The second example below shows database linkage information.

Router# debug ip dhcp server events

Router# debug ip dhcp server packets

DHCPD:DHCPDISCOVER received from client 0b07.1134.a029 through relay 10.1.0.253.

DHCPD:assigned IP address 10.1.0.3 to client 0b07.1134.a029.

DHCPD:Sending DHCPOFFER to client 0b07.1134.a029 (10.1.0.3).

DHCPD:unicasting BOOTREPLY for client 0b07.1134.a029 to relay 10.1.0.253.

DHCPD:DHCPREQUEST received from client 0b07.1134.a029.

DHCPD:Sending DHCPACK to client 0b07.1134.a029 (10.1.0.3).

DHCPD:unicasting BOOTREPLY for client 0b07.1134.a029 to relay 10.1.0.253.

DHCPD:checking for expired leases.

Router# debug ip dhcp server linkage

DHCPD:child pool:10.1.0.0 / 255.255.0.0 (subnet10.1)

DHCPD:parent pool:10.0.0.0 / 255.0.0.0 (net10)

DHCPD:child pool:10.0.0.0 / 255.0.0.0 (net10)

DHCPD:pool (net10) has no parent.

DHCPD:child pool:10.1.0.0 / 255.255.0.0 (subnet10.1)

DHCPD:parent pool:10.0.0.0 / 255.0.0.0 (net10)

DHCPD:child pool:10.0.0.0 / 255.0.0.0 (net10)

DHCPD:pool (net10) has no parent.

Related Commands

show ip dhcp bindings show ip dhcp database

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Cisco Systems 32369 manual Debug ip dhcp server, Router# debug ip dhcp server linkage

32369 specifications

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